Valve guide removing and installing tool



Sept. 27, 1966 D. M. HOOPER VALVE GUIDE REMOVING AND INSTALLING TOOLFiled NOV. 2, 1964 United States Patent Office 3,274,674 Patented Sept.27, 1966 3,274,674 VALVE GUIDE REMOVING AND INSTALLING TOOL Donald M.Hooper, Markham, BL, assignor to Allis- Chalmers Manufacturing Company,Milwaukee, Wis. Filed Nov. 2, 1964, Ser. No. 408,015 4 Claims. (Cl.29214) This invention relates to a novel valve guide removing andinstalling tool which an engine mechanic may use to remove and installvalve guides in cylinder heads of internal combustion engines.

Heretofore various tools have been used to remove and install valveguides from cylinder heads of internal combustion engines, but thesehave not proven to be entirely satisfactory. Some such tools aresuitable only for use with valve guides of a particular engine andothers lack sufiicient adjustability to permit use on a wide variety ofvalve guide installations.

It is the principal object of this invention to provide a valve guideremoving and installing tool which has sufiicient adjustability topermit it to be employed in installing and removing valve guides in manydifferent internal combustion engines.

It is a further object of this invention to provide a valve guideremoving and installing tool which has a stop member which is readilyadjustable on a driving member so that it may be used for a wide varietyof valve Iguide installing and removing operations.

It is a further object of this invention to provide a valve guideinstalling and removing tool as set forth in the previous objects whichconsists of a minimum of parts and is relatively inexpensive tomanufacture.

These and other objects will be apparent to those familiar with the artwhen the following description is read in conjunction with the drawingsin which:

FIG. 1 shows my valve guide removing and installing tool employed ininstalling and removing operations;

FIG. 2 is a view taken along the line IIII in FIG. 1.

Referring to the drawings, my valve guide removing and installing toolincludes a driver 11 having a pilot portion 12 at its lower end and athreaded portion 13 at its upper end. A shoulder 14 of greater radialwidth than pilot portion 12 is formed intermediate portions 12 and 13and is adapted for axial thrust transmitting engagement with the end oftubular valve guides 16, 17. As illustrated on the left side of FIG. 1,my tool is being employed to install the valve guide 16 in the valveguide bore 18 of an internal combustion engine cylinder head 21. Thecylinder head 21 is shown upside down. In order to press the valve guide16 to the proper depth below the cylinder block engaging surface 22, astop member in the form of a plate 23 and a lock nut 24 are provided.The stop plate has a threaded opening 26 in threaded engagement withthreaded portion 13 of the driver 11. After screwing the plate to theproper axial position on the driver, the lock nut 24 is screwed tightagainst the stop plate 23.

A press ram 31 or the like may be employed to push the driver downwardlyuntil the stop plate 23 contacts surface 22 of the cylinder head and atthis point the valve guide 16 is properly press fit at the desiredposition in bore 18. By adjusting the position of the stop plate 23 onthe threaded portion 13 my tool may be employed to install valve guidesin cylinder heads having difierent specifications as to position of theend of the valve guide in relation to the cylinder block engagingsurface of the head.

As shown in the right hand side of FIG. 1, the stop plate 23 and locknut 24 have been removed from the driver 11 and the driver is beingemployed to push the valve guide 17 out of its press fitted engagementwith bore 32. The threaded portion 13 is, of course, smaller in diameterthan the bore 32. A press ram 33 or the like may be employed for thisoperation also.

The top of the driver 11 is provided with a screwdriver slot 34 therebyproviding means to hold the driver from turning when the stop plate andlock nut are threaded onto the threaded portion 13.

My tool maybe used for a variety of engines inasmuch as any stop plate23 can be positioned at any point along the threaded portion 13 of thedriver. The nut 24 serves as a releasable locking means for adjustablypositioning the plate 23 at the desired axial position on the driver 11.

The embodiments of the invention for which an exclusive property orprivilege is claimed are defined as follows:

1. A valve guide removing and installing .tool comprising:

an elongated cylindrical driver having a pilot portion at one endthereof adapted for insertion into a tubular valve guide,

a shoulder of greater radial width than said pilot portion and spacedaxially from said one end of said driver, said shoulder adapted toengage an axial end of said tubular valve guide, and

a threaded portion on said driver intermediate said shoulder and theother end of said drive-r,

a stop member having an opening through which said threaded portionextends, and

a nut threaded on said threaded portion of said driver on the side ofsaid stop member remote from said shoulder, said nut being in abuttablerelation .to said stop member.

2. A valve guide removing and installing tool comprismg:

an elongated cylindrical driver having a pilot portion at one endthereof adapted for insertion into a tubular valve guide,

a shoulder of greater radial width than said pilot portion and spacedaxially from said one end of said driver, said shoulder adapted toengage an axial end of said tubular valve guide, and

a threaded portion on said driver intermediate said shoulder and theother end of said driver,

a stop member adjustable axially along said threaded portion includingan opening through which said threaded portion extends, and

means releasably locking said stop member to said threaded portion.

3. The structure set forth in claim 2 wherein said opening is providedwith internal threads in threaded engagement with said threaded portionof said driver.

4. The structure set forth in claim '3 wherein said means includes alock nut on said threaded portion of said driver.

References Cited by the Examiner UNITED STATES PATENTS 1,759,285 5/1930Sease 29-275 1,863,956 6/1932 Wilson 29275 1,902,711 3/1933 Kulp et al.29-214 WILLIAM FELDMAN, Primary Examiner. J. C. PETERS, AssistantExaminer.

1. A VALVE GUIDE REMOVING AND INSTALLING TOOL COMPRISING: AN ELONGATEDCYLINDRICAL DRIVER HAVING A PILOT PORTION AT ONE END THEREOF ADAPTED FORINSERTION INTO A TUBULAR VALVE GUIDE, A SHOULDER OF GREATER RADIAL WIDTHTHAN SAID PILOT PORTION AND SPACED AXIALLY FROM SAID ONE END OF SAIDDRIVER, SAID SHOULDER ADAPTED TO ENGAGE AN AXIAL END OF SAID TUBULARVALVE GUIDE, AND A THREADED PORTION ON SAID DRIVER INTERMEDIATE SAIDSHOULDER AND THE OTHER END OF SAID DRIVER, A STOP MEMBER HAVING ANOPENING THROUGH WHICH SAID THREADED PORTION EXTENDS, AND A NUT THREADEDON SAID THREADED PORTION OF SAID DRIVER ON THE SIDE OF SAID STEP MEMBERREMOTE FROM SAID SHOULDER, SAID NUT BEING IN ABUTTABLE RELATION TO SAIDSTOP MEMBER.